Automatic hand and band saw tooth-setting machine



Feb. 21, 1950 v. c. LORENZ 2,498,167

AUTOMATIC HAND AND BAND SAW TOOTH SETTING MACHINE v Filed May 6, 1948 2 Sheets-Sheet l Ana-2.44441 ENTOR.

Vincent 6: Lorenz,

g mm

Fb. 21, 1950 v. c. LORENZ AUTOMATIC HAND AND BAND SAW 'roo'rn Filed May 6, 1 948 SETTING. MACHINE 2 Sheets-Sheet 2 JNVENTOR.

VinCenZ' C ZW'en u lzbrnqys i atented Feb. 21", 1956 Amommr amwn Awn nmnznezew TOOTH SE'RTINGLMflCHmEL Vincent; Ilorenz, Anaeondm, Mont;- Appli'oa'tibn Mkyr 6;1948,1 semiamt: zsas azi The: present: invention relates tm improvements Another otij'eot of the present inventioni'is'itos prov-ide an improved-"machine:of this chara'ctee'im which thesaw is intermittently" fed? through-trite;

machine to bring: each-successive toothtinto; setrting position.

Stilt another object of thepresent; invention is t'o=*provid an improved saw tbotlie set/ting; mas chine which meains are prov ided' fomcontrolling? tfi'e amount-of set g'i ven to tfie teeth;

A further objee't'ot the present invention? is to. provide an improved machine; of typez-ina.

which means a/re'provided for adjusting theiin'z-e termittentsew-feedihg deviee soth atsaws'havmgi different size teetii can be pmperlyw fed thnou'ghm the machine;

A-sti1=i fiirther object o'st 'th'e present inventi'om is" to provide a, machineof thisa kind iwhiohtisx' strong and rugged ana -yet is economicalctoio'onestruct" and operate: 7

WitH the. foregoing; and other: objects: View the' ihve'ntibn Will be hereitiafiter morefulhedefscrflfied and more" partibuleirly pointed outline-the appended clalir'nsi the drawings in: which; the s zcme pantsi are; denoted by the same reference numerals out the several views,

Figure 1 is a; top plan 1 view of a, saw toothe setting machine constructed in accordance Wififf tfi'e' present inventionand showing?" parts: broken away and im section;

F'i'gme 21's 2. lbn'gitudinalfverticazisectionali view' on t11e'Iine22 ofFigure I, andi showing a; saw oa'i rie'r, and

Figure 3" is a; transverse vertioel sectional. viewr on the 'li'ne 3-'--3 of Figure 2 and? showing; amsaw carrier;

Figure 4 is a,- front elevationel of a: jig for setting band saw teeth and showing-a; portion 01:

thesette'r frame prate in dotted lines,

Figure 5- teen end view 01': the: ligand setter ffaim'e mete shown in Figure 43.

Figure 6 is a transversevertical secttcmatView of'ai modified form '15 tlfi'e: invention with pants:-

br'oken" away, and V figure '7 is an end" view O' f'the modification; shown in Figure 6.

Referring more particularly" to the drawings; l0 indicates a, setter frameplate supported; but legs" I- l and 2 which" are adapted to rest upon: the: floor o1?- a) shop orotherbufldmgi A coma-shafts (Cl. 7 6.i-5.8.);

and settenfbracketi lfik'is sunnortedzbwthe meme; plate; Hh-by/ a; pain of connecting; m mbers 14 and; iiiwhichiare inttheform ofia-neleginons; one flan e Ofl each of them-ernbete;- I143- andial 511s; conneatedi to;

% thEtDlEtG''l-flflfld the othenr'flanee ofi eeaoinofpthet members is: attQohedFtio am opposite: side:v Qfr henbracket: lmas shown imEigu-rel.

The bnacket, I131 extends; unwandiw, above: they pleterand; adiaeentizits; upper 'fnee-rendithem bnaoket; haSlLattaQhEd thereto? afifiiet-r1f' 1.-2 d7elike;

body memben-r lfiilof-i aaeanvshaftiholderi, A1251? tured. arms lslzanritl 8,-extend1 horizonmnyrfmmstheonp'ositaendsv of? the; member? Hit The; apentmze in* themmms; I tend mane inihonlzontatalignment;

159' and? receive-therethnougm; a. cam. shaft: I8: for:

wh'iohzthey aotaaszheamings: Theshaft lsfad iae;

centionmend' has: a; wlieel: 2D:mountedzthereontbm aset scnewr 23h andz: a: crank 011i" handle 22' is? attachedi to; the: Wheel: -bwbo1tsen nuts 23;;

Intermediatedts: ends and withim the; confines: ofithe anmsv If! and l28;;thesha@t nlflphas mounted: thereon: spaced; apart 'oams: Mand Z5,-;.with.: thew c-amlplOfiQctiOnS:OBF'fBJGBS' 2e and: 2:1, nespeotive1y; cin'cumferentiallw spaced apart; 1-30 degrees;

: spacing*'s1eve;28? e'ncincles;:Lthe sha f t liq and oneiend abuttingr thez' i'rmerr recent the: arm; I11; and its: opposite end abutting the; adjacent: side ot the cam- 243 msi rnilarspaoing sleeve; 29%

cireies the sliaf-tmlgfazndf has: onei-endiaibuttingz 391 the: inner: face; ofi'tlie mm: L83 and: its'othemrende abutting the; adjacent; side; of the; cam 25;, Beatween the same: 2141' andzr zi there; iszmountedaonm' the shaft. I 95 at thirmcam am. having two: cam. pno jGtiOIlS'or' facesis-lf'andiaZZ-whifih31 8 diamettieaslilivr' opposed: and each ofi' whichisecimumferentiellye spaced 90 degrees from the cam faces; fitwandtfl ofi thec'am's A24 endtzfii A tooth setter-ion rockeazrplate; 3311s pivotalilw' smpporte'di by a pwot'pimfl on; theisetterbratekete l3 beneath thebony memben Htofthe cam shaft;

hol'dlen; Thea-maker please misrherd on its pivot, pin new nuts 35.; "the intermediate} portion. of the upper edee-o'tthe; rocker plate: 33; is. cut away at-LSB; A flange:-

extends. fnoms the? upper edge of: the rocket plate: 3% at su-bstsmtianlly,- right; angles; thereto: and on one;v sidezor the cut, away portion 336. Thefian'ge 31 Iiesbeneatin the (281mb. 24 1- and haste screw threaded: opening-:1 3,8; t em through: f'OrfihGfIBCQDtiOlIDf a1set adjusting; senewa 3 9: which is in" verticaii alignment; with; t'hercemlt: A second 11321 156 20 similar to flan e; it] is clips? posed on the oppositesideroflthe eut" away pop, time 3.6- enwextendsimom upnee edge of. the? rocker: 3112x6133: at" substantially right angles thereto; The; fianeeusdiesbeneeth the; cam 25' and has a screw threaded opening 4| therethrough for the reception of a set adjusting screw 42 which is in vertical alignment with the cam 25. The screws 39 and 42 are disposed on opposite sides of the pin 34 and adjacent the outer edge of the rocker plate 33.

A coil spring 43 has its lower end attached to the flange 31 adjacent its outer edge and its upper end attached to an L-shaped bracket 44 which is supported by the arm H of the cam shaft holder l6. The lower end of a coil spring 45 is attached to the flange 48 adjacent its outer edge and the upper end of the springis attached to an L-shaped bracket 46 which is supported by the arm l8 of the cam shaft holder Hi.

The outer edges 41 and 48 of the rocker plate 33 converge downwardly and the lowermost portion of these edges and the lower medial portion of the rocker plate 33 are cut away to form a saw tooth receiving recess 49. The lowermost walls 58 and of this recess 49 are disposed at an angle of the order of 45 degrees to the vertical medial line of the rocker plate 33. The upper walls 52 and 53 of the recess 49 are also disposed atan angle of the order of 45 degrees to the vertical medial line of the rocker plate 33 and the intermediate walls 54 and 55 of the recess connecting the upper and lower walls are disposed at an angle of the order of 90 degrees to the upper and lower walls. Jaws 56 and 51 of a vise for holding a saw 58 in proper-position within the recess 49 are supported by the bracket l3.

A pair of guides 59 and 88 are supported by the frame plate l8, one guide being located adjacent each end of the frame plate l8. Each guide has a flange 8| which is spaced from and parallel to the frame plate |8 to provide a recess for the reception of the upper portion of a carrier bar 82. The lower edge of the carrier bar 62 rides on rollers 63 and 84 which are rotatably supported by the frame plate I8. These rollers 83 and 84 are located in vertical alignment with the guides 59 and 68, respectively. Standards 85 have their upper ends attached to the carrier bar 82 and each of the standards 85 has an elongated vertically extending slot'81 for the reception of abolt 88. A block 69 is carried by each bolt 68 and in cooperation with its standard 85 is adapted to clamp and hold the saw 58 therebetween. A nut 18 is received by each bolt 88 for holding the blocks 69 in adjusted position for different width saws. The carrier bar 82 belongs to Foley filing machine. After filing saw in machine it is put through setter on same carrier or it can also be equipped with any other filing machines carrier.

A lever 1| is pivotally supported as at 12 to a bracket 13 which is supported by a leg 14 attached to the frame plate |8. One end of the lever 1| is of inverted 'U-shape and a roller 15 is pivotally supported by the lower free end of the U-shaped portion of the lever H in vertical alignment with the cam 38; Adjacent its opposite end the lever 1| is provided with a through screw-threaded passageway 16 for the reception of a screw threaded bolt 11. Wing nuts 18 are received by the upper screw-threaded end of the bolt 11. The lower end of the bolt 11 is attached to the outer free end of an arm 19 which has its opposite end secured to a link 88 by welding or the like. The upper end of the link 88 is bifurcated to provide ears 83 which are pivotally supported by the pivot 12 and the lower end of the link is pivotally connected as at 8| to a pawl or dog 82. The free pointed end of the pawl 82 rests upon the teeth 4 I88 of the saw 58. A standard 84 is supported by the frame plate I 8 and carries at its upper end a bracket 85 which supports one end of a bolt 86. The other end of the bolt extends through an aperture 81 in the link 88. The extended portion of the bolt 86 is screw-threaded and receives a wing nut 88. A coil spring 89 encircles the intermediate portion of the bolt 88 and is confined between the bracket 85 and the link 88. The bolt 88 has an apertured extension 90 which receives the upper screw-threaded end of a pin 9|. Nuts 92 are received by the screw-threaded portion of the pin 9| and the lower end of the pin 9| is attached to the pawl 82. A coil spring 93 is confined between the extension 98 of the bolt 86 and the upper surface of the pawl 82 for normally urging the pointed end of the pawl 82 into engagement with the teeth I88 of the saw 58. A bracket 94 is supported by the frame plate |8 adjacent the guide 59 and a pin 95 has its upper screw-threaded end extending through an aperture in the bracket 94. The screw-threaded end of the pin 95 receives a nut 96. A coil spring 91 encircles the pin 95 and has its upper end bearing against the bracket 94 and its lower end engaging'a shoe 98 which is pivotally mounted on'the frame plate I8, as at 99. The shoe 98 is attached to the lower end of the pin 95 and is held yieldingly against the upper edge of the carrier bar 82 by the spring 91.

In the use of the device a saw 58 is clamped between the standards 85 and the blocks 89 with the saw between the jaws 58 and 51 of the vise so that the teeth I88 are properly positioned in the recess 49 of the plate 33. The cam shaft I9 is then rotated by means of the crank 22 and the wheel 28. This rotation of the cam shaft l9 will bring the cam projection 26 of the cam 24 into engagement with the set-adjusting screw 39 of the rocker plate 33. This will cause the rocker plate 33 to rock on its pivot 34 so that the lower wall 58 of the recess 49 in the plate 33 will engage the tooth of the saw within the recess 49 and impart to it the proper set. When the cam 24 moves the rocker plate 33 on its pivot pin 34, coil spring 43 will be extended so that when the cam projection 28 ceases to contact set-adjusting screw 39 the coil spring 43 will suddenly contract and snap the rocker plate 33 back to its original position. As the rotation of the camshaft I9 is continued, the cam projection 3| on the cam 38 will engage the roller 15 on the lever 1| to cause the upward movement of this end of the lever on its pivot 12. The opposite end of the lever 1| will be'moved downwardly and through the bolt 11 will swing the arm'19 and the link 88 on the pivot 12 against the action of the spring.

89'to move the pawl 82 so that the saw 58 will be moved a distance =equal'to the width of one tooth |88 through the engagement of the end of the pawl with a tooth of .the saw. AS soon as the 'cam projection 3| of the cam 38 is moved out of engagement'with'the roller 15 of the lever 1|, coil spring 89'wi1l expand to move the link 88, the arm 19 and the lever 1| back to their original positions' Through the movement of the pawl 82 the nextadjacent tooth of the saw is brought into proper saw setting position within the'recess 49 of the rocker'plate 33; The continued rotation of the cam shaft i9 will cause the cam projection-21 of the cam 25 to engage its set adjusting screw 42 so that the rocker plate will be swung on its pivot pin 34 in a direction oppositeto that caused-by the cam 24; This projeotiiin's 31 f and 32 whih' are: diametneai-lyr o posed;.twa successive ad acent teeth may: be

set rtr eacrrrotatiorr ftne cam shat-15 1 Tli'ezspnng si a d snoe sa provide attnsrons bralieare! the saw earrir barm ts: rev'e savFise-bein fed through"the machmesse sa passageway 'lt i the never 5 .tn'enn'gt of f t e The ani'oun t of set giVn'" to th teth i controlled by-e1istnging the distanee between the set adjiisti'n'g' screws 3 9 andM-i" and t ir' resp'efi' tiv 'calns 2 l and? 5 So tH'at the distafibe "of waves of the rocker plate 33 can be var id.

Th'is"-ifn'proved setting 'machine will set [any saw from sixteen points .to three .points to 'the inch. It will also setany""bandsaWfrom onefourth to I on'e and oneehalf in'ches Wides the addition of the small attachment mamas:

purpose.

Figures 4 and '5sh'ow a 'J'igior setting the teeth of band saws which includes' a pair of Q-clarnps- I u Ibonnecte'd b -a-web- I 02 -havin g bindingisctews I 03ifr det'tchably-supporting tli jig up'or'i the settfi ffanie -plate in. An-H sliapd plate m having slots l 05 --is adjustably supported by tfie clamps =I I hi means of bolts 1 06 which through: the sl'iits -I and-receiv nuts I 01,

Adjacent its lower-:end the web=-I 02 has a cut away portion I08 whioh isbent forwardly and upwardlyat an angle of the or'dr of 90 degres hasffsecuredsthereto against ro io'na nHt IUQI The+ brackt= I 08 and the nut I llll' h'ave aligned interiorly screw-threaded openings I I 0 which rereive a screw-threaded crank III. The intermediate upper end of the plate I04 has a, cut away portion I I2 which is bent forwardly and downwardly at an angle of the order of 90 degrees to the plate to form a flange. The flange II2 has a smooth bore opening which receives the upper headed end 6'6 of the crank I I I so that the crank can rotate within the opening in the flange I I2, but the crank will carry the flange with it in its vertical movements. On each side of the flange II2 the upper endof the plate I04 is bent forwardly and downwardly at an angle of the order of 90 degrees to the plate I04 to provide lower saw guides I I3.

A bar H4 is secured as by welding or the like to the forward free end of the flange I I2. Adjacent each end the bar II4 has a vertically extending through opening having a smooth bore for the reception of adjusting bolts I I5 which are held in adjusted position by set screws H6. The upper end of each bolt I I 5 is screw threaded and a pair of nuts III releasably clamp an upper saw guide II8 therebetween.

amaze movement 'ios thet'rtclier plat 3i wliil caus tnee th lowr" gi-i" 'es l ls ar" repenyrposino a so that tli'e banner -tn tandrawla rstsnpen th- Ila? Thie -operands or the niactline will thefi be as describ spring me *isattaenease rocke plat -3; and at 1 I A sees 1 te anu 21 abrupti rise' from theic" st psaides r th'e ii'r'races f the cams's and -ai catd'at a moo r'eateraistanee no the ax s-forit feica I "'4 than are the-same races zs' a'na'zr of the-"cams nan-c1 25;

st and siortnevise-are at I 28 in to plfov e" 's I23 -a f s e hammef blow will be strii'cl th-sa tootliby =the iocker platf The movement of' therocker plate will alternately place the springs I20 and I2I under compression and when the cams I24 and I25 have moved out of contact with their respective adjusting screws the springs will quickly return the rocker plate to its original position.

It is obvious that various changes and modifications may be made in the details of construction and design of the above specifically described embodiment of this invention without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claims.

What I claim is:

1. An improved saw tooth setting machine comprising a frame plate, a support for a saw supported by the frame plate, a rocker plate supported by said frame plate and having opposed surfaces for alternately striking successive ad-- jacent saw teeth from opposite sides of a saw, a cam shaft supported by said frame plate, a pair of cams on said cam shaft for moving the rocker 76 plate alternately in opposite directions for strik-e 2 hd 3 whefi it is desirea te stane j ing the saw teeth, a third cam. on said cam-shaft;

a pawl supported by the frame plate and enend pivotally supported by the frame plate and its lower end pivotally connected to the pawl and having a through aperture intermediate its ends, a bracket supported by the frame plate, a screwthreaded bolt supported by said bracket with its threaded end passing through the aperture in the link and extending therebeyond, a coil spring encircling the bolt and having one end bearing against the bracket and its other end bearing against the link, and a nut received'by the extended screw-threaded end of the bolt for ad justing the tension of the coil spring.

2. An improved saw tooth setting. machine as claimed in claim 1 characterized by the fact that the head of the bolt has, an apertured extension, a pin is provided having its lower end connected tothe pawl and its upper end screw-threaded and passing through and beyond the extension, a coil spring surrounds the pin and is confined between the pawl and the extension, and a lock Y nut is received bythe projecting screw-threaded.

end of the pin.

3. An improved saw tooth setting machine comprising a frame plate, a support for a saw supported by the frame plate, a rocker plate ,supported by said frame plate for rocking movement and having opposed surfaces for alternately striking successive adjacent saw teeth from opposite sides of a saw, a cam shaft supported by said frame plate, and a pair of cams on said cam shaft.

for moving the rocker plate alternately in opposite directionsfor striking the saw teeth, a third.

cam on said cam shaft having two diametrically opposed cam faces, a pawl supported bythe frame plate and engaging the teeth of a saw, and an operative connection between said third cam and the pawl for intermittently moving the .saw the distance of a tooth, a pair of L-shaped brackets supported by the frame plate, ,a coil spring having one end attached to the rocker plate and its other end attached to one of the L-shaped brackets, and a second coil spring having one of.

the rocker plate is supported by a setter bracket, which is supported by the frame plate and they cam shaft is supported by a holder which is supported by the setter bracket, and that a wheel and crank are mounted on the cam shaft for rotating the cam shaft.

5. An improved saw tooth setting machine 1 comprising a frame plate, a support for a saw supported by the frame plate, a rocker plate supported by said frame plate for rocking movement and having opposed surfaces for alternately strik ing successive adjacent saw teeth from opposite sides of a saw, a cam shaft supported by said frame plate, and a pair of cams on said cam shaft for moving the rocker plate alternately in opposite directions for striking thesaw teeth, a screw like blow, compression springs supported by the rocker plate and the frame plate for returning the rocker plate to its original position after each A striking movement, and a vise having a pair of opposed jaws adapted to engage the saw, the I upper surfaces of the jaws of the vise being inclined upwardly towards each other and the upper ends of the jaws being beveled upwardly away I from each other for providing a slot for the movement of the rocker plate.

VINCENT C. LORENZ.

REFERENCES CITED The following references are of record in the .file of this patent:

its ends attachedto the rocker plate and its other end attached to the other L-shaped bracket.

4. An improved saw tooth setting machine asclaimed in claim 3 characterized by the fact that UNITED STATES PATENTS Number Name Date 335,596 Landgraf Feb. 9, l886 557,959 Bredin Apr. 7, 1896 767,130 Addison Aug. 9, 1904 2,109,161 Biro Feb. 22, 1938 2,343,171 Collier Feb. 29, 1944 2,461,782 Stadick Feb. 15, 1949 I FOREIGN PATENTS Number Country Date ;27,622 Great Britain 1910 435,671 France Jan. 4, 1912.

France July 23, 1912 

